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-rw-r--r--include/net/mac80211.h11
1 files changed, 9 insertions, 2 deletions
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 523c6a09e1c8..d69081c38788 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -3095,7 +3095,9 @@ enum ieee80211_filter_flags {
*
* @IEEE80211_AMPDU_RX_START: start RX aggregation
* @IEEE80211_AMPDU_RX_STOP: stop RX aggregation
- * @IEEE80211_AMPDU_TX_START: start TX aggregation
+ * @IEEE80211_AMPDU_TX_START: start TX aggregation, the driver must either
+ * call ieee80211_start_tx_ba_cb_irqsafe() or return the special
+ * status %IEEE80211_AMPDU_TX_START_IMMEDIATE.
* @IEEE80211_AMPDU_TX_OPERATIONAL: TX aggregation has become operational
* @IEEE80211_AMPDU_TX_STOP_CONT: stop TX aggregation but continue transmitting
* queued packets, now unaggregated. After all packets are transmitted the
@@ -3119,6 +3121,8 @@ enum ieee80211_ampdu_mlme_action {
IEEE80211_AMPDU_TX_OPERATIONAL,
};
+#define IEEE80211_AMPDU_TX_START_IMMEDIATE 1
+
/**
* struct ieee80211_ampdu_params - AMPDU action parameters
*
@@ -3896,7 +3900,10 @@ struct ieee80211_ops {
*
* Even ``189`` would be wrong since 1 could be lost again.
*
- * Returns a negative error code on failure.
+ * Returns a negative error code on failure. The driver may return
+ * %IEEE80211_AMPDU_TX_START_IMMEDIATE for %IEEE80211_AMPDU_TX_START
+ * if the session can start immediately.
+ *
* The callback can sleep.
*/
int (*ampdu_action)(struct ieee80211_hw *hw,